A Power Bank is used to recharge your electronic gadget when you’re particularly on the go. They can also be used as one of your items in your bug out bag or survival gear kit. Power Banks come in all sizes... from pocket sized to higher capacity larger sized ones. They can recharge your cell phone, tablet, laptop, camera or any device that needs power to operate. How Do I Charge my Power Bank: Charging a power bank is easy. Most Power Banks come with a USB input port or mini USB port. These ports are used to connect to a wall socket to charge them up or you can charge them by using a port on your computer. Believe it or not, there are also solar powered power banks. These are great to take along when your are camping, fishing, hiking or used as one of your items in your survival gear. How Do I Use My Power Bank: Once your power bank is fully charged, you can plug it in your device to charge it up if the batteries are running low.